--  @testpoint:opengauss关键字right(保留)，作为函数名

--关键字不带引号-成功
create function right(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/

--清理环境
drop function right(i integer);

--关键字带双引号-成功
create function "right"(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/

--清理环境
drop function "right"(i integer);

--关键字带单引号-合理报错
create function 'right'(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/

--关键字带反引号-合理报错
drop function if exists `right`;
create function `right`(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/
